BACKGROUND:Sometimes, a Bullet Bill just isn't enough to take down the Portly Plumbers, so
Bowser calls in the big guns, namely: Banzai Bills. The only thing that really
makes them a bigger threat is their size, but in these cases, bigger is better.

EVOLUTION:Banzai Bills have only appeared twice: once in Super Mario World and once in Super Princess Peach. They look much the same in both games.